Securities and Exchange Commission

100 F Street, N.E.

Judiciary Plaza

Washington, DC  20549



Ladies and Gentlemen:



  I hereby authorize Erik T. Hoover, Corporate Secretary and Corporate Counsel, or any Assistant Secretary, or their respective successors in office, to sign and file on my behalf SEC Forms 3, 4 and 5 or any other SEC forms relating to changes in beneficial ownership of securities of E. I. du Pont de Nemours and Company.  This authorization shall remain in effect as long as I am an executive officer of DuPont unless it is earlier specifically revoked by me.



      Very truly yours,



      /s/ Douglas W. Muzyka



      Douglas W. Muzyka

      Senior Vice President &

         Chief Science & Technology Officer







      Date:  November 20, 2014